Command prompt secret

https://www.howtogeek.com/254401/34-useful-keyboard-shortcuts-for-the-windows-command-prompt/

Command Prompt with just your keyboard:

• Windows (or Windows+R) and then type “cmd”:  Run the Command Prompt in normal mode.
• Win+X and then press C: Run the Command Prompt in normal mode. (New in Windows 10)
• Win+X and then press A: Run the Command Prompt with administrative privileges. (New in Windows 10)
• Alt+F4 (or type “exit” at the prompt): Close the Command Prompt.
• Alt+Enter: Toggle between full-screen and windowed mode.

And about Linux shell:

https://www.howtogeek.com/412055/37-important-linux-commands-you-should-know/